APA (7th ed.) Citation

Sobel, M. A. (1987). Algebra and trigonometry: A pre-calculus approach (2nd ed.). Prentice-Hall.

Chicago Style (17th ed.) Citation

Sobel, Max A. Algebra and Trigonometry: A Pre-calculus Approach. 2nd ed. Englewood Cliffs, N.J: Prentice-Hall, 1987.

MLA (9th ed.) Citation

Sobel, Max A. Algebra and Trigonometry: A Pre-calculus Approach. 2nd ed. Prentice-Hall, 1987.